TY - JOUR
T1 - Kinetic scheme of biomass pyrolysis considering secondary charring reactions
AU - Anca-Couce, Andres
AU - Mehrabian-Bardar, Ramin
AU - Scharler, Robert
AU - Obernberger, Ingwald
PY - 2014
Y1 - 2014
N2 - A widely applicable kinetic scheme for pyrolysis is still missing. In this work an adaptation of the mechanistic scheme developed by Ranzi et al. (2008) for pyrolysis of small ash free biomass particles is proposed. The scheme is modified to include secondary char formation reactions, which are relevant for particles of a certain thickness, and sugar formation is avoided due to the catalytic effect of alkali metals in biomass. The predictions of the adapted scheme are compared to experimental data from the literature of pyrolysis in fixed beds of particles with a size of around 1 cm. It is shown that the adaptation improves the prediction of the final char yield and its CHO composition and also the yields of the main groups of volatiles, as carbonyls + alcohols, sugars and water vapor.
AB - A widely applicable kinetic scheme for pyrolysis is still missing. In this work an adaptation of the mechanistic scheme developed by Ranzi et al. (2008) for pyrolysis of small ash free biomass particles is proposed. The scheme is modified to include secondary char formation reactions, which are relevant for particles of a certain thickness, and sugar formation is avoided due to the catalytic effect of alkali metals in biomass. The predictions of the adapted scheme are compared to experimental data from the literature of pyrolysis in fixed beds of particles with a size of around 1 cm. It is shown that the adaptation improves the prediction of the final char yield and its CHO composition and also the yields of the main groups of volatiles, as carbonyls + alcohols, sugars and water vapor.
U2 - 10.1016/j.enconman.2014.07.061
DO - 10.1016/j.enconman.2014.07.061
M3 - Article
SN - 1879-2227
VL - 87
SP - 687
EP - 696
JO - Energy Conversion and Management
JF - Energy Conversion and Management
ER -